| Symptom | Probable Cause | Solution | |---------|----------------|----------| | Short circuit between C and E | Overvoltage or overcurrent exceeding rating | Check snubber, reduce bus voltage, or increase gate resistance | | Slow switching / high heat | Incorrect gate drive voltage (too low) | Verify +15V gate drive; increase current capability | | Intermittent failure at startup | Inrush current without soft-start | Add NTC thermistor or pre-charge circuit | | Excessive EMI noise | Too fast turn-on/off | Increase gate resistor to 47Ω-68Ω |
) are often used as more robust substitutes, provided they match the package size and voltage requirements. for a specific device repair? IGBTs | Toshiba Electronic Devices & Storage Corporation gt20ge409